Ivan Tarachanka

Developed and enhanced software components using Java and Spring Framework, and worked with databases such as MongoDB and ClickHouse. Implemented a web application QA automation process using a WebdriverIO boilerplate project and WireMock to create a stable, isolated test environment, running tests on a Selenoid server, integrating with the ReportPortal reporting tool. Developed acceptance tests for a Swing desktop app using the Jemmy library and the Page Object Model design pattern without PageFactory.

Developed new libraries with microservices architecture using Rest APIs, Spring Boot and Kafka. Transformed legacy application into a suite of cloud-hosted microservices with Spring Cloud, and laid the groundwork for traffic scaling. Worked in an agile framework collaborating with business in story grooming.

Event Notification API: marketing messages, push notification (experimental feature). Used Spring Cloud Data Flow. Batch task development: import/export data processing (Spring Boot, Spring Batch, Quartz Job Scheduler). Integration with third party API: Apache Camel, OpenFeign, Resilience4j (a Circuit Breaker implementation). Support and bug fixing for web and mobile clients (React, React Native).

Refactored a code base using MVC and Supervising Presenter design patterns (ExtJS). Input validation (Hibernate Validator). Support for distributed event processing: log processing (ActiveMQ in the embedded mode).

Developed critical parts of Java/JavaScript code: a session management, user input components. Used a lightweight implementation of security framework as Apache Shiro. There were the Backbone framework (Marionette) and React on the client side. Integration with SOAP Services: Apache Camel. Batch task development: file processing, bulk processing. Used Spring Integration, Spring Batch and Quartz Job Scheduler.

Support and bug fixing for web and mobile web clients (jQuery). Built a pipeline for statistical analysis. Used Pentaho Data Integration. Analyzed the market basket to find association rules using Pentaho Data Mining Weka.

Support and bug fixing for JSF-based web apps: CRUD operations, business logic, input validation rules (RichFaces, Spring, Hibernate, JavaScript).

Internal course (training). Design and development of business applications using Abap/4.

Degree work: System analysis of sales. Theory of automatic control. Design of microcontroller’s systems. Numerical methods. Computer security. Student’s works: Numerical methods (research work), Design of digital data transmission system, Design of controlling block is based on AVR-microcon

Basics of programming. Theory of database systems. Fundamentals of design of client/server systems. Theory of operating systems. Student’s works: Operating systems. Concurrent Programming: Peterson’s Algorithm (research work). Practical Java. JDBC API, Swing API.